RADAR APPARATUS

摘要

Each of antenna system processors of a radar receiver generates, through correlation calculation of a reflection signal and a radar transmission signal, an array correlation signal for each delay in arrival of the reflection signal at each Doppler frequency. A static target candidate extractor extracts, on the basis of outputs of the antenna system processors and a Doppler frequency of a reflection signal from a static target located at a side of a moving body, array correlation signals corresponding to a candidate for the static target. A reference signal detector outputs a reference signal regarding the side of the moving body using, among the outputs of the static target candidate extractor, array correlation signals whose consistency is high. A correction value calculator calculates, using outputs of the reference signal detector, a correction value for correcting deviations between reception antennas included in an array antenna.

主权项

1. A radar apparatus mounted on a moving body, the radar apparatus comprising:
a radar transmitter that transmits a high-frequency radar transmission signal from a transmission antenna; and a radar receiver that receives a reflection signal, which is the radar transmission signal reflected from a static target or a moving target, using a plurality of reception antennas, wherein the radar receiver includes a plurality of antenna system processors that each generate, through correlation calculation of the reflection signal and the radar transmission signal, an array correlation signal for each delay in arrival of the reflection signal at each Doppler frequency, a static target candidate extractor that extracts a plurality of array correlation signals corresponding to a candidate for a static target located at a side of the moving body on the basis of outputs of the plurality of antenna system processors and a Doppler frequency of a reflection signal from the static target, a reference signal detector that outputs a reference signal indicating presence of the static target at the side of the moving body on the basis of a correlation between the plurality of array correlation signals corresponding to the candidate for the static target located at the side of the moving body, and a correction value calculator that calculates a correction value for correcting deviations between the plurality of reception antennas using the reference signal and information regarding a mounting angle of the radar apparatus mounted on the moving body.